The document discusses how human evolution and psychology explain why people are drawn to use the internet and social media. It argues that the internet satisfies fundamental human needs and is an extension of human physiology. As humans evolved to be adaptive, inventive, and reliant on sharing knowledge through culture, the internet is a natural progression that allows sharing of information on a vast scale. This revolutionary change is about public relations, as PR helps spread values and knowledge to build relationships, which is what humans are programmed to do and what the internet now enables.